National Hurricane Center Check out their Atlantic Cyclone Forecast Graphics
Detailed updates at 5AM, 11AM, 5PM, & 11PM sometimes with interim public advisories. Their server can get very busy.
Tropical Weather Many pages of detailed descriptions and satellite images from the Weather Underground. This site puts up the NHS data faster than the NHS and their server seems faster.
Hurricane Central from the Weather Channel;
Their meterologists offer their own interpretation along with the NHS facts